I’d call it C rather than A dorian

Stoneboy wrote, "I’m a bit confused about the key here - it seems to me that If I accompany this tune I play the chords for C major." I agree. A dorian has an F sharp in it; C major, of course, has F natural. There are several places in this tune where you could drop an F natural in and it would sound fine, e.g., in measure 5 in the run up to G. I don’t think there’s any place an F# would fit.

Yeah, it ends on an A, but so what? It just begs to resolve to a C chord.

Lunasa Version

I posted a setting which is very close to the Lúnasa version in their Maids In The Kitchen track. Of course they played it in Gm to be more cool :-), but Am is easier, at least on my banjo, or C whistle - lost my Bb whistle somewhere - should get another.

I Ne’er Shall Wean Her, X:8

I Ne’er Shall Wean Her, X:9

A few small variations from the previous setting posted, transposed up to Bmin, and a variant ending from the Ross Ainslie & Jarlath Henderson album Air-Fix (track "Gordon"). Wouldn’t use that ending every time playing through the tune of course!

I Ne’er Shall Wean Her, X:11

Taken from ‘A Fine Selection of Over 200 Irish Traditional Tunes for Sessions’, compiled by David Speers with a Forward by Matt Cranitch. I’ve added this setting as it appears in the book with the B part an octave below what’s usually played. Anybody come across this before?

I Ne’er Shall Wean Her, X:12

Heard this variant live on the whistle recently, 2nd or 3rd pass through the tune. The first two bars of the B Part, |dg2 g2e|dg2 g2e|, those repeated g’s were slid onto, air cut-off between each of them. Sounded great!